build(deps): bump ocpp from 2.0.0rc2 to 2.0.0rc3 in /tests/ocpp-server (#1248)

build(deps): bump ocpp from 2.0.0rc2 to 2.0.0rc3 in /tests/ocpp-server (#1248)

Bumps [ocpp](https://github.com/mobilityhouse/ocpp) from 2.0.0rc2 to 2.0.0rc3.
- [Release notes](https://github.com/mobilityhouse/ocpp/releases)
- [Changelog](https://github.com/mobilityhouse/ocpp/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mobilityhouse/ocpp/compare/2.0.0-rc.2...2.0.0-rc.3)

---
updated-dependencies:
- dependency-name: ocpp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>